Blender base



FIG. 1 is a perspective view of a portion of a blender base, according to my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a right side elevation view thereof.

The broken lines in the figures illustrate unclaimed environment and form no part of the claimed design. 

CLAIM I claim the ornamental design for a blender base, as shown and described. 